Abstract
214 Maximal oxygen uptake (˙VO2max) in rowing ergometer test is indicated to be the almost same as cycling one, despite that the exercising muscle mass in rowing is greater than that in cycling. This phenomenon would result from respiratory restriction by posture and motion during rowing. We focus on how the differences of the posture and motion between rowing and cycling exercises influence on the anaerobic threshold (AT). Seven national college level male rowers (height 175.9±4.95cm, weight 69.4±9.18kg) performed two incremental exercise tests on rowing and cycle ergometers. The gas exchange was monitored continuously throughout the exercise tests. There were no significant differences in ˙VO2max (3.40±0.41 vs. 3.44±0.54 l · min-1; rowing vs. cycle ergometers), and maximal ventilation(˙Ve max) (137.9±18.72 vs. 150.0±20.38 l · min-1) between rowing and cycling exercise tests. ˙VO2 per body mass at AT obtained in rowing ergometer, however, is significantly greater than that in cycle ergometer (38.3±6.17 vs. 31.6 ± 4.56 ml· kg-1 · min-1; P<0.05). ˙VCO2 and ˙Ve during submaximal exercise were greater in cycle ergometer than in rowing one. It is concluded that greater exercising muscle mass in rowing exercise reduces the contribution to anaerobic energy, which might result in slower appearance of metabolic acidosis during submaximal exercise.
Published Version
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